diff --git a/noxfile.py b/noxfile.py
index 6be2205..c97e986 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -59,10 +59,10 @@ def _setup_venv(session: nox.Session, all_extras: bool = True, resolution: str |
         session: The nox session
         all_extras: Whether to install all extras
         resolution: Optional uv resolution strategy (e.g. ``"lowest-direct"``).  When
-            set, ``--resolution <value>`` replaces ``--frozen`` so uv re-resolves
+            set, ``--resolution <value>`` replaces ``--locked`` so uv re-resolves
             rather than using the lockfile.
     """
-    args = ["uv", "sync", "--resolution", resolution] if resolution else ["uv", "sync", "--frozen"]
+    args = ["uv", "sync", "--resolution", resolution] if resolution else ["uv", "sync", "--locked"]
     if all_extras:
         args.append("--all-extras")
     session.run_install(
diff --git a/tasks.toml b/tasks.toml
index 3502b8c..3b9bb01 100644
--- a/tasks.toml
+++ b/tasks.toml
@@ -28,7 +28,7 @@ description = "Install dev dependencies and pre-commit hooks"
 run = """
 uv tool install keyring==25.7.0 --with keyrings.google-artifactregistry-auth==1.1.2
 if [ -f uv.lock ]; then
-  uv sync --all-extras --frozen
+  uv sync --all-extras --locked
 else
   uv sync --all-extras
 fi